Window frame and sash.



PATENTED JUNE `23, 1903.

" No. 731,600. l

\ J. o. MUMAHON.

WINDOW FRAME AND sAsH. `APPLICATION IILBD APB. l, 1902i. RBNEWED APB. 14, 19031 N0 MIGUEL.

` mail.

\ wrrnsssss i, ment applied thereto.

NITED STAT@J `Pri-Tiaiwr Patented Julie 23, v1903.

OFFICE..

JOSIAH O.MCl\/IAHON, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE OI-IAMBERLIN METAL WEATHER STRIP COMPANY, OF DETROIT, MICHI- GAN, A CORPORATION OF MICHIGAN.

`WINDOW FRANIEAND SASH,

sPEcIPicATIoN forming part of Letters Patent No. 731,600, dated annessi 190e.` lipplimitniednprn1,1902. RenweaAprn14,1903. stanno. 152.625. manada;

To @ZZ 'whom t may concern:

Be it known ,that I, JOSIAH C. MCMAHON, a citizenof theUnited States, residing at Pittsburg, in the county of Allegheny' and 5` State of Pennsylvania, have invented or discovered certain new anduseful Improvements in Window Frames and Sashes, of which improvements the following is a specification.

d The invention described herein relates to Io certain improvements in window frames and sashes, and has for its object aA construction whereby the usual guiding strips or beads may be omitted and the sashes guided and held in position by metallic ribs, which can :5 be readily appliedto frames and sashes now in use and will also serve as aweather-strip, forming a tight `joint with the walls of a groove in the sash.

The invention is hereinafter more fully dezo 'scribed and claimed. A

In the accompanying drawings, forming a.

part of this specification, Figure l is a view, partly in section and partly in elevation, of a window frame and sash having my improve- Fig. 2 is a transverse section on a plane indicated by the line II 1I, Fig. l. Fig. 3 is a view similar to Fig. l,

illustrating a modification of my improve! ment; and Fig. 4 isa transverse section on I 3o the plane indicated 4by the line IV IV, Fig. 3.

It has heretoforefbeen customary to arrange The sashesina window-frame between guiding-ribs secured tothe sides of the frame and generally arranged or secured Within grooves formed in the frame.` This construction, the

parts beingformed of wood, necessitates the space between theAguiding-ribs being made somewhat wider than the thickness of the sash in order to prevent the latter sticking during 4o damp weather. This looseness or lack of tit renders necessary the employment of some kind of weather-strip to render the Window sash and frame sufliciently tight to prevent drafts.

, In' the'practice of myinvention the guiding stri ps ,or beads heretofore employed may be entirely omitted, and finlieii thereof I einploy metal strips consisting of a base l, adapted to be secured to the sides 3 of the window- SQ-frame, and one or more pairs of ribs or beads 2, projecting at right anglesf'roln the base and adapted to enter groovsformed in the .edges of the sashes 4. These strips are se- .,cured to the frame in the planes of movement of the -sashes and are entirely covered thereby, except at their ends, when the two sashes are in normal or closedpositions. As clearly shown in the drawings, especially in Figs. 2 and 4, the ribs or beads 2: are spaced a distance apart greater than the widths of grooves 6o 5, formed for the reception of the sash-cords, so that the strips can be readily applied to frames and sashesnow in use. By this construction an efficient guide is provided f or the windowsashes, such guide also servingrasaweatherstrip, forming a tight joint with the sash. As thesiripis formed of metal, .there will be no swelling or enlargement thereof in damp weather, and hence the grooves in the sashes l may be made to fit quite closely to the bead, 7o

especially along the edge thereof. As shown in the drawings, two independent strips, each provided with two ribs or beads, may be used, or a single stripprovided with two, four, or

more ribs may be used, as `'shown in Figs. 3 75 and 4. When independentstrips are employed, they need not extend much beyond the normal position of the sash., as shown in Fig. 1; but when the guiding-ribs for both sashes are formed on a `single strip they 8o would extend the entire length of the sash, as shown in Fig. 3. These `metal guide and weather strips maybe secured to the sashes by screws or nailsfor when applying the strips to old frames the bead dof such frames may be grooved closely adjacent to the surface of the frame and the inner edges of the metal strips pushed into the grooves. In such case the outer edges of the strips will be held by the molding strips or beads 7 and 9o 8, as 4clearly shown in Fig. 2. When the guide-ribs 2 for both sashes are formed on a single strip, as in Fig. 4, the outer edges of such strips may be held in place by moldingstrips in the manner illustrated-in Fig. 2. When asash bindsin a frame, it is generally between the edges of the sash and the surfaces of the frame between the guide-ribs. In order to avoid this, the edges of the sash are cut away, and a yielding bearing for such roo edges is formed by swelling out the portions 9 of the metal strips between the guide and sealing beads, as shown in Fig. 2. This swelling out may be effected in several waysas, for example, by making the inner portions a of the folds forming the beads 2 shorter than the outer portions b, as shown in the upper part ofFig. 2, thereby holding the intermediate portion away from thesash, 0r the intermediate portion may be forced or sprung out, as shown in the lower portion of Fig. 2. When the strip extends the entire length of the frame and it is desired to remove the sashes, the securing-screws on one side of the frame would be loosened and the strip on that side would be swung out from the frame with the sash. It is preferred that the strips should be continued across the upper and lower ends ot' the frames, where they would serve merely for holding the sashes in position when closed and also to prevent the ingress of air.

I claim herein as my inventionl. The combination of a window-frame, sashesmovable in the frame and provided with grooves in their edges, and metal strips providedwith one or more pairs of guide-l ribs, the portions of the strips intermediate of the members of each pair being swelled out, substantially as set forth.

2. The combination of a window-frame, sashes movable in the frame and provided with grooves in their edges on opposite sides of the sash-oord, metal strips consisting of a base and one or more pairs of guide-ribs, and molding and separating or guiding strips engaging the edges of the metal strips, and secured tothe frame, substantially as set forth.

In testimony whereof I have hereunto set my hand.

JOSIAH C. MCMAHON.

Witnesses:

DARWIN S. WoLoo'rT, F. E. GAITHER. 

